Perpetual calendar



y 15, 1929- c. A. WARD 1,7

PERPETUAL CALENDAR Filed Nov. 9, 1927 gwuentoz Patented July 16, 1929.

UNI-TED STATES 1,720,774 PATENT OFFICE.

CHARLES A. WARD, OF. ST. PAUL, MINNESOTA, ASSIGNOR TO BROWN ST. PAUL, MINNESOTA, A CORPORATION OF MINNESOTA.

& BIGELOW, OF

PERPETUAL CALENDAR.

Application filed November 9, 1927.

My invention relates to a calendar having a nature particularly adapted to provide means to indicate the day of the month, and permitting the calendar to be set for any date, so that the calendar is of a perpetual nature.

A primary feature of the invention resides in a series of plates which are slidably arranged .in a casing so that as the casing is rotated the plates can slide from one end to the other of the casing, thus the plates change places in the operation of the calendar so that in the course of the rotation of the casing, the plates have changed in a manner to indicate the entire series of days in a month, from one to thirty one.

In a calendar of this nature it is desirable to provide a suflicient weight so that the plates indicating the days of the month. will slide easily. To accomplish this I provide plates made of metal or other suitable or heavy material, yet having a thin, sheet-like nature to permit the same to be comparatively compact within the casing in which they operate.

It is also a feature of the invention to provide a frame about the plates which is ad apted to protect the body of the plate so that in the operation of the calendar in the plates sliding one past the other, they will not scrape against them sufiicicntly to wear the display surface of the plate. It is also a feature to provide plates made of a sin piece of metal including the body and the frame portion about the same, all of which is weighted by reason of being made of metal or other similarly heavy material.

My invention includes a method of making plates for the perpetual calendar consisting in decorating portions of a sheet, then stamping out the decorative portions with an outer border portion which is undecorated, and forming the same so that the undecorated portion of the stamped out pieces form a border having a smooth surface so that the finished plates may slide, one against the other, with the decorative portions spaced away from each other to prevent wearing of the descripti ve surfaces in the operation of the calendar, when the plates slide from one end to the other of the casing wherein they are contained. The plates of the calendar are adapted to be concealed within the casing so that only the descriptive surface of each plate is exposed when the plates have reached their limit of sliding movement on either end of the casing. Thus the frame or body portion of each plate Serial No. 232,058.

step of the method.

Figure 5 illustrates another step of the method.

Figure 6 is a cross section of one of the plates made bythe method of Figures 3, 4. and 5 where the plate is formed froin a single piece of sheet material. I

Figure 7 illustrates. another form and method of making the plates.

Figure 8 illustrates the body of the plate used in the method of Figure 7.

Figure 9 is across section of the plate in the method of Figures 7 and 8 where the body of the plate is made from one piece of material and the frame is made from another.

Figure 10 is a front view of my calendar employing the rotatable day indicating casmg with the slidable indicators and display plates therein. i

My invention includes a method of making display plates in a manner so that they will operate elticiently. In carrying out my method, I have illustrated a display casing A which is pivotally supported at 10. The display casing A is adapted to contain a series of display plates 11.

The display plates 11 are supported within the display casing A in a manner so that they can be displayed through the openings 12 formed on opposite sides and ends of the display casing A. Thus when the display casing A is rotated on the pivot 10. the plates 11. will slide from one end to the other of the easing A to provide displays visible through the openings 12.

My method includes the making of the display plates 11. from metal, and this is an important feature of the invention because in displays of this nature it is necessary to have suflicient weight without adding to the width of the plates so that the display device can be made of a compact nature and easily operable to insure that the plates will always slide quickly into display position when the display casing A is rotated.

I carry out my method by covering the sheet metal lei with a background color 15 of a ize to provide the background for the display plate 11 after the sheet let has been treated to provide the background color in the proper positions on the sheet and of proper dimensions. I then apply on the background color the configuration or display 16 which may be in the form of a numeral or picture or other suitable display so that it will stand out onthe background. Obviously the background and illustration maybe formed on the sheet 14: in a single operation or in any suitable manner as it is desired.

The next step of my method in providing my display plates 11 is to blank out the (llS- play plates 11 in the formation illustrated in dotted outline in Figures 3 and f to provide a border port1on18. The border 18 is then folded so that it will provide a projecting frame or border portion about the center '19 of the plates 11, the purpose ofwhich will be hereinafter clearly described.

The frame 18, when formed of the same sheet material 14 as the body of the display plates 11, is not covered with any decorating material, preferably for the reason of keeping the frame smooth and free from any substance which would retard its free sliding in the casing A. Nevertheless it is apparent that the entire surface of the plate including the frame 18 may be covered, provided it is of a nature such as not to retard the free sliding of the plates 11 against each other.

The fran'ie 18 is particularly adapted for the purpose of providing a raised border or frame about the display surface 19 of the plates 11 so that when the plates are in operative position within the casing A, they may slide freely, one against the other without the display surfaces 19. touching or rubbing. Thus the outer edge of the plates 11 is so embossed and formed as to provide a guard around the entire display plates 11 which prevents the plates from rubbing against each other in operative position within the casing.

In Figure 6 I have shown. the frame 18 blanked out of a separate piece of material and in Figure 7 I have illustrated the border of theplate 11 having the surfaces 19 therei on blanked from a separate piece of material.

In this construction the frame 18 is died out as indicated by the dotted line 20 and then the of metal or other heavy material so that they will slide freely owing to the weight of the same within the casing. These plates may be formed from a single piece of material, as illustrated, or may be formed of separate pieces, but it is essential that they be of a heavy nature, yet being thin and compact so as to take a small space in the operating carmg.

My display and indicating plates are partieularly adapted for use in a calen-clarsuch as G, which is provided with a base B for sup porting the rotatable casing A, which is adapted to hold the slidable plates 11. The i I; supported by the standards which })l-f3}C-CE upwardly from the base 3 and pivotally support the casing A at 10.

it aniniportant feature of the invention that the plates should be formed of a suliiciently heavy nature to prevent lagging action of the plates in operation. I overcome this objectionable f-catin'e by forming the plates of metal which is comparatively thin, and in sheet formation, yet having the heavy weight which causes the plates to slide with a quick snapping action in the casing A.

It will be readily appreciated that if the plates are not sidiiciently heavy to slide freely the display member A will not operate efficiently so that the plates will come into position to properly display the plates 11. I have found my plates to operate very e'i' liciently. each plate sliding with a quick snapping action into display position.

In accordance with the patent statutes, I

have described the principles of my inventiou, and while I have set forth the'particular method and formation of the parts. I desire to have it understood that the same is only illustrative of a means of -.ing out my invention, and that changes may be made within the scope of the following claims. without departing from the spirit of the same.

I claim:

1. method of making display slides for calendars consisting in placing a decoration with a defined border on a sheet of metal and stamping the metal sheet out with the border formation which is adapted to project in a manner to protect the decorative face of said plate to permit the plates to slide Without rubbing, one against the other.

2. A method of making a display plate for calendars and the like, consistingin decorating portions of a flat sheet of material and stamping out the flat sheet with defined border portions about the decorated portions. then forming the border portion to provide a projecting bead about the periphery of the display plate to protect the display face when the plates slide, one against the other.

3. A method of forming display plates consisting in first decorating the surface of sheet metal. adapted to form the plates with- .lllO

ill)

in a defined area, then stamping the plates out of said sheet material With a defined border about the display portions and then forming the defined border portion in a manner to provide a projecting surface about the display face which is adapted to protect the display face in the sliding movement of one plate against the other.

t. A method of forming display plates consisting in first decorating the surface of sheet metal adapted to form the plates Within a defined area, then stamping the plates out of said sheet material with a defined border about the display portion and then forming the defined border portion in a manner to provide a projecting surface about the display face which is adapted to prevent the rubbing of the display faces one against the other when the plates are held collectively together in a casing adapted to enclose the same.

5. A method of forming a calendar consisting in forming display plates by stamping the same from sheet metal which has been decorated to provide display faces on either side thereof, with an undecorated marginal edge portion, then forming the marginal edge in a manner to project on either side of the plate to form a protection for the display surfaces and provide a rotatable casing for containing said plates to permit the plates to slide from one end to the other thereof in a manner to display either side of the plates in the rotation of the casing.

(3. A calendar including a series of single sheet display plates formed of metal, a protective edge portion formed integral on said plates, a decorative surface on either side bounded by said edge portion, a casing for slidably supporting said plates in a manner to permit the plates to slide one against the other, said edge portion being adapted to protect the display faces on said plates and the metal formation of said plates providing a weighted display plate adapted to slide quickly in said casing when the same is rotated.

7. A method of providing a Weighted display plate for calendars and the like consisting in decorating a sheet metal plate to form a display thereon, then defining a border and forming the same to project about the entire periphery of the plate so as to prevent the decorated surface of the plate from rubbing one against the other when the plates slide in use.

8. A calendar comprising display members formed of single sheet metal plates, a display formed on either side of said plates, a metal border frame for said plates adapted to project on either side of the same to protect the display faces and means for holding said plates collectively in a manner to permit the same to slide by gravity to expose the display faces thereof, the weight of the plates providing a sliding snapping action in the operation of the plates.

9. A method of forming display plates for a calendar and the like consisting in decorating portions of sheet metal on either side thereof with a background color, then placing a display on said background, then stamping said plates out of said sheet With a defined border portion of an undecorat-ed nature, then forming said border portion in a manner to provide a marginal frame about the decorated face of the plate Which projects in a plane parallel to said decorative face to permit the plates to be placed one against the other.

10. A calendar including a series of display plates formed of a single piece of metal, a body portion adapted to receive a display on either side thereof, and an enlarged edge projecting from and in a manner to form a border about said body portion to protect the display on the body portion when the plates are adapted to slide one against the other.

CHARLES \VARD. 

